Metal wheel.



PATENTED DB0, 22,1903.-

R. BRADLEY.

- METAL WHEEL. APlLIoATIoNNrILBD APE. 22. 1903.

No non BL,

F-l G vl;

following is a specification.

Patented December 22, 1903,.

UNITED' STATES `Putin o-mee.:

,ROBERT BRADLEY, 0E MINEAPOLIS, MINNEsoTA. l'

METALIwi-i-EL.'

SPECIFICATION forming part of Letters Ifatent No. 747,369," iiat'ije'mbeffzaf 193. Y'

'Application nea .ipriiz?,19031' serai No. 153,836. ,(No model.) f

closed'endlof the bo-dyportion. -An aperture f' To all whom t mag/concern,.- p l Beit knowny that I, ROBERT BRADLEY, af citizen of the United States, residing at'Minneapolis, in the county of Hennepin and State of Minnesota, have invented new and usefuli Improvements in Metal Wheels,'ofwhich thef My invention relates to new and usefulimL provements-in metal wheels, and morevpar-l ticularly to the hubs thereof; audits object is to provide a device of this character which; may be readily formed of metalf'and haslv means whereby the working parts thereof may be thoroughly lubricated.

Another object is to employ means for securely fastening the hub into position upon an axle.

With the above and other objects in View the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illuscrated in the accompanying drawings, showing the preferred form of myinvention, andI in which Figure 1 is a longitudinal section through my improved hub, the same being shown in position upon an axle. Fig. 2 is a longitudinal section through the body of the hub detached, showing a modified means for connecting spokes thereto. Fig. 3 is a detail view of the sleeve of the axle.V Fig. 4 is a section through a tire and felly adapted to be used in my improved construction of wheel; and Fig. .5 is a transverse section through a modification of the hub, the same being shown provided with ball-bearings.

Y Referring to the iigures by numerals of reference, 1 is an axle of any suitable form, having a sleeve 2 secured to the end thereof by means of a pin 4, which-extends through apertures 5 within said sleeve and a passage 6 within the axle. This sleeve has a series of grooves 7 within the sides and ends thereof and is adapted to fit within a hub of novel construction. Thishub comprises a hollow body portion 8, substantially cylindrical in form and having an inwardly extending flange 9 therein adjacent to the closed end 10 thereof. The sleeve 2 is adapted to p roject into the body of the hub and abut against flange 9, and a compartment 11 is thus formed between said sleeve and its axle and the 12 is formed within-:thecenter yof-e'hd 10 and is normally closed in any suitabley manner, as by means of a screw-plug 13. 'The openend of the body portion is internally screw-threaded,

spaced from axle 1 by means of aninwardlyextending flange 16, Yformed at its'fou-ter'end. An angular flange 17 incloses the sleeve 15 as shown vat 14, and is-'adaptedtoreceiveand engage one end of a sl'eeve`15, which is-held and is-integral therewith, and Vthis iiang'e abuts against the end of the body Aportion -8 and also serves the purpose of a nut to permit the sleeve t0 be readily screwed into the body portion of the hub. A set-screw 18 may be employed for locking said sleeve in position. A dust-cap 19 is mounted upon the axle and extends over the adjacent end of sleeve 15 and is held spaced therefrom by means of an inwardly-extending ange 20. This cap is held in position upon the axle by means of a set-screw. 2l or in any other suitable manner.

A iiange 22 is formed integral with and incloses the body portion of the hub, and spokes 23 are adapted to be clamped thereagainst by means of bolts 24, which engage aclampingring 25. If desired, however, the body portion of the hub may be ,so constructed as to permit wire spokes to be attached thereto. I have shown such a' construction in Fig. 2, in which the hub is provided with internallyscrew-threaded recesses 26, each of which is adapted to receive the threaded end of a spoke 27. Where a spoke of this character is used, the other end thereof is secured in any suitable manner to a felly 28, which is circular in form and substantially U-shaped in crosssection, as shown in Fig. 4, laterally-extending anges 29 being arranged at the sides thereof. The tire 30 of the wheel is shrunk upon the felly and may be then locked thereon in any suitable manner, as by means of screws 31. A nut 32 may be arranged on each spoke to lock it in position within the felly.l Oil is placed Within the compartment 1l through the aperture 12, and it is obvious that it will be evenly distributed over the outer face of the sleeve 2 by iiowing through grooves 7. Said grooves will also conduct the oil to that portion of the axle which is located within the sleeve 15, and it will be seen that a smoothly- IOD running bearing may thus be readil obtained. The plug 13 prevents the admission of dust to the bearing, and the cap 19 also serves to protect the interior of the hub from dust, &c. If desired, balls 33 may be interposed between the sleeve 2 and the body 8 of the hub, and in such case it is unnecessary to provide grooves 7 within the sleeve, as oil will be free to ow between the balls. In Fig.

5 I have shown the hub provided 'with rollerbearings, as above described. v

In the foregoing description I have shown the preferred form of my invention; but I do and the sleeve, asleeve detachably. secured within the open end of the body portion and adapted to prevent longitudinal movement of said portion upon the axle, and means for conducting oil from the compartment to the bearing-surfaces of the body portion of the hub and the sleeve upon which it is mounted.

2. In a device of the character described, the combination with an axle having a sleeve secured thereon and provided with groovesin the outer surfaces thereof; of a hub mounted upon said sleeve and comprising a body portion normally closedv at one end, there being a flange within the body portion and adjacent to said closed end, Van oil-compartment being formed between the flange and end of the body portion, a sleeve detachably secured within thev opposite endv of the body portion, said sleeve and flange serving tov prevent longitudinal movement of the hub upon the axle.

In testimony whereof I aliix my signature in presence of two witnesses.

ROBERT BRADLEY.

Witnesses:

RICHARD TATTERSFIELD, A. G. WILLITS. 

